摘要
针对为保持２～２５ＧＨｚ本振信号的高相干性而对传输本振信号的光纤通信系统相位噪声特性提出的严格要求，对组成系统的频综源、调制器、激光器等各部分的噪声来源和可能出现的非线性进行了分析，提出了限制条件，并指出了系统的可行途径。
ith respect to the strict requirement in the phase noise characteristic of the fiberoptic transmission system which transmits the 2～25GHz local oscillation signal for keeping high coherence,this paper analyses the source of phase noise and the possible nonlinearities in each part of the transmission system including synthesized sweepers,modulator,laser,etc.and points out limitations.Furthermore,it also provides a feasible way to realize the system.
关键词
本振信号
光纤传输
相干性
相位噪声
光纤通信
local oscilllation signal,fiberoptic transmission,coherence,phase noise,nonlinearity
